Conveyer



E. F. OYSTER Feb. 17, 1931.

CONVEYER A Filed May 17. 1929 m. r .m m e @m 9m 1 ,J. ,VA O Z 3 w U VN, 1 E W @j N. A@ Q l D D D D D D D m. w i.. SMT (.IiITlllllllllllllllllllllllll'vlllllIL luvv &\ .o\ m C .EW v ALI .m.\ f o f o N m, mw o ww o .wwm E o 0% /nlln QM Patented Feb. 17, 1931 luui'iiin STATES giA'rEN'i ortica nARL F. oYs'rER, oF SHAKER ianrerris, oHio,` .essreiroia vro Tian osBonN MANUFAC- 'rURING COMPANY, or.citnvniniirii,i cerro, e. coaroirafri'oir or o'riIo CONVEYER Application filed May 17, 1929: Serial Nie. 363,909.

The present invent-'ion relates to a method of and `apparatus for distributing sand or other tluentmaterial to a plurality of stations. More particularly, 4the invention relates to a Hight,c'onveyerespecially adapted for use in lconnection witha system including4 molding machines, a storage chamber for sand, hoppers orsupplying sand to vthe molding machines, and means tor conveying the sand l0 from tlie'storage chamber to the hoppers; and

' the primary object of the inventionis to pro-A vide means. for preventing waste of sand. Further objects will appear as the description proceeds. To the accomplishment of the foregoing and related ends, said invention, then, conssts'ofthe means hereinafter fully described vand particularly pointed out inthe claims. y t The annexed. drawing and the ,following description set forth in detail certainmechanisin embodying the invention, such disclosed means constituting, however, but one of various mechanical formsin which-the principle of! the invention may be used. Infsaid annexed drawing: Y

Fig. 1 is a more or less diagrammatic view of an installation of the character described; Fig. 21s an enlarged elevation ot a section of arrflight conveyer;.Fig. 3 is av viewV taken substantially in the plane ofthe 'line 3 3 in Fig. 1 and on a stillturther enlarged scale of one `of the' flights audits associated parts; and Fig. 4 is a `diagraminatic view taken substantially in the plane of the line 4-4 in Fig. 1L

In installations of the general type to which referencehas been made, it is usual to :provide'an elevator t'ed from a storage chamfheig-said elevator being adaptedto raise .the sand anddeposit the same in .one end of a trough. The troughv is disposed aboveV the open ends of `a plurality ofzlioppers. and is formed with portsin-its bottom registering with` said open hopper ends. FAn endless chain or belt is provided, one run thereof being located adjacent the trough, and said chainor' beltcarrieslightsor pusher plates `whicliextend downwardly fronifsaid chain orbeltto enter the trough. @As the'endless member isadvanced," the platespush thefsand """"5f alongthe trough; whereby some'lof thefs'a-nd is causedto drop through the ports and into Vthe hoppers below. Itis, of course, necessary to :supply an excess f of sand to the trough in order to insure tilting of the iinal hopper, and

ordinarily this excess sand is pushed oit the end of the trough and is allowed to build up in a pile which must later be returned to the Vstorage chamber in wheel barrows, or by some other means. It is an fobjectof ,thepresentV invention to eliminate the necessity -i'or this manual return of sand.

vted from astorage chamber 11. A conveyor 12 is arranged to carry sand iii stated quantitiestrom said chamber to a ,container 13 f whence the sand flows into the Velevator 14,

being discharged theretromthrough a spout 15 into an endgfo aV trough 16.l Immediately below the trough 16 and in the saine `vertical planetherewith there ismounted `a second, substantially duplicate, trough 17, `one end 13 of which extends beyond the corresponding v end 19 of the trough 16. In line with the troughs 16 and 17 there are mounted 1iair oi sprockets 20 over which extends a conveyer. As will be clear froinFig. 1, the 'upper run 21 of the conveyer is positioned adjacent the trough 16 while the lower run 22 thereof 'is j positioned adjacent the trough 17.i e,

- This conveyer comprises a pairv of vendless Vchains built up of links 23 pivoted to' each otherV and carrying rollers 24. Said Vrollers 24 are adapted to run in trackways25` `mounted on the upper edges of the troughs 16 and 17. Contrary to usual practice,'tlie iiights 26y carried byth'is conveyer are pro vided not only ,with downwardly 'extending portions 27 adapted to scrape through the trough 16, but alsowith upwardly extending p portions 28 adapted, when in the lewer run 22,V to scrape through the trough 17.. As vwill 1 .be clear. romfthe drawings, the flights 26 extend substantially equal Ldistances oppo-V` site directions from the'conyeyer ina plane perpendicular to theplane 'of travel of said conveyenl v As' in usual' practice,"the*trough 16 lis pro- "vided with ports 31 :in 'its bottom 'aligned with the open upper' ends of the hoppers 10. The trough 17 is likewise provided with ports 32 in its bottom, such ports being vertically aligned with the corresponding ports in the trough 16 and with the hoppers 10 In operation, then, sand is delivered from the spout 15 of the'elevator 14 into the'e'nd 29 of the trough16, such sand being deliveredin quantiti-es in excess of the needs of the hoppers 10. As the conveyer is advanced, the lower portions 27 of the flights 26 pick up the sanddelivered from the spout 15 and carry it along through the trough 16. As the sand passes the ports 31 in the bottom of the trough,

, some sand will fall through each of the apertures and into the hoppers 10. As has been indicated, however, an excess of sand must be provided and, in accordance with the present invention, this excess is brushed offV the end 19 of the trough 16 and falls into theend 18 of the trough 17. Following a particular flight 26, from the pointwhere it moves beyond the end 19 of the trough 16, it will be seen that this flight vis carried around the sprocket 20 and then starts back, moving toward the left as viewed in Fig. 1. It will be seen that, at this time, the portion 28 of this iight points downwardly, and it is the portion 28 which enters the trough 17. Here the iiight 26 comes in contact with sand discharged into thel trough 17 from the trough 16, and such sand is pushed l,toward the left as lviewed in Fig. 1 by the ends 28 of the iights 26. As the sand is moved in this direction through the trough 17, another opportunity is provided for supplying sand tothe hoppers 10, it being understood that sand will fall through the ports 32 of the trough 17 into any hopper which is not completely filled.

If sand is carried into the trough 17 in such large quantities that not all ofit can be received in the hoppers 10, any excess sand will be carried com piet-ely through the trough 17 and discharged :from the end 3() thereof, falling thus into the storage chamber 11.

Other modes of applying the' principle of my invention may be employed instead ofthe one explained, change being' made as regards the mechanism herein disclosed, provided the means stated by anyof the following claims or the equivalent of such stated 'meansfbe employed.

I thereforeparticularly point out and distinctly claim as my invention:

1.l In an organization'of the class described, the combination of a pluralityofdhoppers having open upper ends,',a` trough mounted above said hoppers, said trough'being provided -with ports in' its bottom vertically aligned with said open'ends, asecond' trough mounted above said' first 'troughf 'and inY the same verticall plane therewith, second trough being provided with ports 'vertically aligned `with said openhopper end sand with ne ,ports in said trainees al? @saliese-flesible member having its lower run disposed adjacent said first trough and its upper run disposed adjacent said second trough, and means carried by said member and adapted to enter said troughs successively.

2. In an organization ofthe class described, the combination of a.I'Jluralityy o-'hoppers having open upper ends, a trough mounted above said hoppers, said trough being provided with ports in its bottom vertically aligned with said open ends, a second trough mounted above said first trough and in the same vertical plane therewith, said second trough being provided with ports vertically aligned with said open hopper ends and with the ports in said first trough, an end of said first trough extending beyond the corresponding en d of said second trough, an endless Aflexible member having its lower 'run disposed ,adjacent said first trough and its upper run disposed adjacent said second trough, 'and means carried by said member and adapted to entersaid troughs successively.'

3. In an organization ofthe class described, the combination of a plurality of hoppers having open upper ends, a trough mounted above said hoppers, said trough being provided with ports in its bottom vertically aligned with said open ends,a second trough mounted above saidiirst'trough'and in the same ,vertical plane therewith, said second trough being provided with ports vertically aligned with said open hopper ends and with the ports in said first trough, an end'of said first trough extending beyond the corresponding end lof saidv second trough, means for depositing fluent material in the opposite end of said second trough, an endlessliexible member havingits lower run disposedy adjacent said first trough and its upper run disposed adjacent said second trough, and means carried by said member and adapted to enter said second vand first troughs successively.

4. In an organization ofthe class described, the combination of a plurality' of hoppers having open upper ends, a trough mounted above said hoppers, said vtroughbeing provided with ports in its bottom vertically aligned with said ojpcn ends, a second trough mounted above'sa'id `first trough and in the same vertical plane therewith, said second trough being'provided with ports vertically aligned with said open hopper'ends' andwi'th the ports in said rst trough, an end of said first trough' extending beyond the correspond-- ing' end of said second trough, a storage chamber for fluent material, means forldelivering material from' said chamber'to the opposite Yend'of said second trough, an endless iexible memlier having its lower runfdispos'ed adjacent said first'trou'gh audits upper run Psed adjacent saidsecond trough, and means carriedb'ysaid memberar'id adapted t'o'entleifSal-d Second and first itliughjs' sliessvelif,

naar;@dansessere cess material delivered to said second trough is caused to fall from said tiret-mentioned endv of said second trough into Vthe eeorrespending end of said first trough, and the opposite end of saidrst trough being disposed immediately above said storage chambei whereby excess material delivered to said first trough is discharged into said chamber.

Signed by me this 15th day of February,

EARL F. OYSTER. 

